Communication system, communication device, wired communication device, and communication method

• US 7,835,338 B2
• Filed: 03/06/2006
• Issued: 11/16/2010
• Est. Priority Date: 03/07/2005
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Fujii, Kunihide
• Primary Examiner(s): Moe; Aung S
• Assistant Examiner(s): MENSAH, PRINCE AKWASI
• Application Number:
  US11/369,795
• Publication Number:
  US 20060198364A1
• Time in Patent Office: 1,716 Days
• Field of Search: 370/464, 370/465, 370/310, 370/335, 370/338, 370/343, 370/352, 370/395.4, 370/401, 370/445, 370/463, 370/475, 235375-386, 235/441, 235/440, 235/439, 235/451, 235/487, 235/492, 235/493, 235/436, 455/39, 455 411- 413, 455/42, 455/500, 455/501, 455/502, 455/557, 455/558, 455/550.1, 455/47, 455/48, 455/63.1, 455/73, 455/74.1, 455/78, 455/84, 455/91, 455/108, 455/183.1, 455/200.1, 455/260, 455/556.1
• US Class Current: 370/343
• CPC Class Codes: H04L 27/02 Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation H04L27/32 takes precedence
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 92/08 between user and terminal device

Abstract

A communication system includes a wired communication device and a communication device that can communicate with a wireless communication device and the wired communication device. The communication device includes a clock output unit and a modulator. The wired communication device includes a clock extracting unit, a signal extracting unit, and a processing unit. The communication device and the wired communication device are connected to each other by a first connecting line through which a modulated signal is sent from the communication device to the wired communication device, and a second connecting line, which is different from the first connecting line, through which a signal is sent from the wired communication device to the communication device.

Claims

1. A communication system comprising:

a communication device; and

a wired communication device connected to the communication device by a first connecting line and a second connecting line;

the communication device including;

(a) a first processor;

(b) a first memory device storing first instructions, which when executed by the first processor cause the first processor to;

(i) output a clock;

(ii) generate a resulting modulated signal by performing amplitude shift keying modulation on the clock using a modulation subject signal to be sent to the wired communication device;

(iii) output, via said first connecting line, said resulting modulated signal to said wired communication device; and

(iv) communicate with a near field communication device that performs near field communication in at least one of an active mode and a passive mode, the near field communication device being different from the communication device and the wired communication device;

the wired communication device including;

(a) a second processor;

(b) at least one of a subscriber identity module and a user identity module; and

(c) a second memory device storing second instructions, which when executed by the second processor cause the second processor to;

(i) extract the clock from the modulated signal sent from the first connecting line;

(ii) extract the modulation subject signal from the modulated signal sent from the first connecting line;

(iii) decode the extracted modulation subject signal in accordance with the extracted clock;

(iv) code stored data in accordance with the extracted clock; and

(v) output, via said second connecting line, said coded data to the communication device.

2. A communication device comprising:

a first processor;

and a first memory device storing first instructions, which when executed by the first processor cause the first processor to;

(a) output a clock;

(b) generate a resulting modulated signal by performing amplitude shift keying modulation on the clock using a modulated subject signal to be sent to a wired communication device;

(c) output, via a first connecting line, said resulting modulated signal;

(d) communicate with a near field communication device that performs near field communication in at least one of an active mode and a passive mode;

and

(e) communicate with the wired communication device, the wired communication device being different from the near field communication device, the wired communication device including;

(i) a second processor;

(ii) at least one of a subscriber identity module and a user identity module; and

(iii) a second memory device storing second instructions, which when executed by the second processor cause the second processor to;

(A) extract the clock from the modulated signal sent from the first connecting line;

(B) extract the modulation subject signal from the modulated signal sent from the first connecting line;

(C) decode the extracted modulation subject signal in accordance with the extracted clock;

(D) code stored data in accordance with the extracted clock;

and

(E) output, via a second connecting line, data to the first processor.

3. The communication device of claim 2, wherein when executed by the first processor, the first instructions cause the first processor to send, to the near field communication device, data by modulating a carrier wave by using a signal obtained by coding data according to a predetermined coding method, wherein:

(a) the modulation subject signal is a signal obtained by coding data according to the predetermined coding method; and

(b) the signal corresponding to the data sent from the wired communication device is also a signal obtained by coding the data according to the predetermined coding method.

4. A method of operating a communication device storing first instructions, the method comprising:

(a) outputting, by a first processor which executes the first instructions, a clock;

(b) generating, by the first processor, a resulting modulated signal by performing amplitude shift keying modulation on the clock using a modulation subject signal to be sent to a wired communication device;

(c) outputting, by the first processor, via a first connecting line, said resulting modulated signal;

(d) communicating, by the first processor, with a near field communication device that performs near field communication in at least one of an active mode and a passive mode; and

(e) communicating, by the first processor, with the wired communication device, said wired communication device including;

(i) a second processor;

(ii) at least one of a subscriber identity module and a user identity module; and

(iii) a second memory device storing second instructions, which when executed by the second processor cause the second processor to;

(A) extract the clock from the modulated signal sent from the first connecting line;

(B) extract the modulation subject signal from the modulated signal sent from the first connecting line;

(C) decode the extracted modulation subject signal in accordance with the extracted clock;

(D) code stored data in accordance with the extracted clock; and

(E) output, via a second connecting line, data to the first processor.

5. A wired communication device comprising:

a first processor; and

a first memory device storing first instructions, which when executed by the first processor cause the first processor to;

(a) extract a clock from a modulated signal sent from a first connecting line;

(b) extract a modulation subject signal from the modulated signal sent from the first connecting line;

(c) decode the extracted modulation subject signal in accordance with the extracted clock;

(d) code stored data in accordance with the extracted clock; and

(e) output, via the first connecting line, a signal corresponding to data to be sent to a communication device including;

(i) a second processor;

(ii) at least one of a subscriber identity module and a user identity module; and

(iii) a second memory device storing second instructions, which when executed by the second processor cause the second processor to;

(A) output the clock; and

(B) generate a resulting modulated signal by performing amplitude shift keying modulation on the clock using a modulation subject signal to be sent to the wired communication device;

(C) output, via a second connecting wireline, said resulting modulated signal;

(D) communicate with a near field communication device that performs near field communication in at least one of an active mode and a passive mode; and

(E) communicate with the first processor.

6. A method of operating a wired communication device including first instructions, the method comprising:

(a) extracting, by a first processor, a clock from a modulated signal sent from a first connecting line;

(b) extracting, by the first processor, a modulation subject signal from the modulated signal sent from the first connecting line;

(c) decoding, by the first processor, the extracted modulation subject signal in accordance with the extracted clock;

(d) coding, by the first processor, stored data in accordance with the extracted clock; and

(e) outputting, by the first processor, via said first connecting line, a signal corresponding to data to be sent to a communication device including;

(i) a second processor;

(ii) at least one of a subscriber identity module and a user identity module; and

(iii) a second memory device storing second instructions, which when executed by the second processor cause the second processor to;

(A) output the clock; and

(B) generate a resulting modulated signal by performing amplitude shift keying modulation on the clock using a modulation subject signal to be sent to the wired communication device;

(C) output, via a second connecting line, said resulting modulated signal;

(D) communicate with a near field communication device that performs near field communication in at least one of an active mode and a passive mode; and

(E) communicate with the first processor.